Sewing-machine hemmer.



Patented Mar, 20,1900

E.B. ALLEN. sawms MACHINE sum-:5;

(Application filed Dec. 6 1898.1 (No Iodel.)

mml

mlmllll luammm 6 (:3 c M uau lo'z M k (a I bbon Lew fHE NORRIS PEYERS 60., PNOTO-LITHO.. WASHLNGTON, D. C

4 UNITED STATES PATENT Erica,

EDWARD B. ALLEN, or ELIZABETH, NEW JERSEY, Assicnon'ro THE SINGER MANUFACTURING COMPANY, OF NEW JERSEY.

SEWING-MACHINE. HEMMAER.

SPECIFICATIONforming part of Letters Patent No. 645,538, dated Mach 20, redo.

Application filed December 6, 1898. Serial No. 698,421. (No model.)

To all whom it mag concern:-

Be it known that I, EDWARD B. ALLEN, a citizen of the United States, residing at Elizabeth, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Sewing Machine Hemmer's, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention has for its object to provide an elastic-presser-foot .hemmerof novel construction, the parts of which can yield sufliciently to allow of the easy passage of the work at cross-sea ms or fells,'so that there will be no necessity of helping the work along by the attendant when cross-seams are reached, as is the case with the presser-foot hemmers nowin use. To this end the rigid tongue of the hemmeiywhich is in alinementcentrally, or approximately so, of the scroll, is mounted on a spring, so that it may yield upwardly when a cross-seam is passing through the hemmer, the scroll, which is of itself somewhat elastic, simultaneously yielding downward to permit the thick part of the work to pass. The improved hemmer presser-foot is also preferably provided at its heel portion, rearward ofthe needle-hole, with a yielding portionwhich allows of the easy passage of the hem, but which presses on the same in a manner to hold it properly and to insure reliable action of the feeding device.

In the accompanying drawings, Figure 1 is a side view, Fig. 2 a plan view, Fig. 3 a front View, and Fig. 4 a bottom View, of the improved hemmer. Fig. 5 is a cross-section of the same on line 5 5 of Fig. 2, and Fig. 6 a longitudinal section on line 6 6 of Fig. 2.

A denotes the presser-foot, and a the shank by which said foot is attached to the presserbar. The foot A is provided with the usual hem-turning scroll b and with arigid tongue 0, which latter instead of being rigid with the foot A, as heretofore, is carried at the forward free end of a spring cl, preferably attached to the foot A by a screw e. The small block 0, on which the tongue cis formed and which block connects said tongue with the spring 01, is constructed to bear on the work,

and thereby to serve as a yieldingly-mouuted presser part of the presser-foot.

The tongue 0 is arranged in alinemeut cen trally, or approximately so, of the scroll b, as is usual; but when a thick part of the work, as a cross-seam or fell,- is passing through the hemmer the forward or free end of the spring (Z will yield, all'owingthe tongue to lift slightly to facilitate thepassage of the work,

and thus avoid the necessity of special atteu tion bythe operator in assisting the work through the hemmer at cross-seams.

The improved hemmer presser-foot is preferably provided at its heel portion, in the line of the scroll andtongue, with a yielding section consisting,'as herein shown, of a stiff springf to press on the hem being formed and which yielding section or spring, while properly pressing on the hem, will when lifted slightly afiord a small groove at the bottom of the recess g, in which said yielding section or spring is arranged to receive the passing hem. The narrow yielding or spring-pressed section of the presser-foot afforded by the spring f cooperates with the yieldiugly-mounted tongue in that said tongue adapts the hemmer for the easy passage of thicker materials than could otherwise readily pass through the hemmer, while the spring-pressed section of the presser-foot afforded by the said spring f when slightly lifted enables the pressure of the presser-foot to be distrib uted between the comparatively-thick portion of the work at the hem and the work at the sides of the hem, so that the hem portion of the work can pass beneath the presser-foot with more freedom and ease than would otherwise be possible for the reason that but for this spring-pressed section at the heel of the foot the pressure of the presser-foot would come almost entirely on the doubled material of the hem, thereby causing an objectionable drag of the work at this point.

Having thus described my invention, I claim and desire to secure by Letters Patent- Ahemmer presser-foot provided with a needle hole or aperture, a turning scroll in front of said needle-hole, and a yieldingly-mounted tongue extending within and codperatingwith In testimony whereof I affix my signature in the presence of two witnesses.

EDWARD B. ALLEN.

Witnesses:

HENRY OALVER, HENRY J. MILLER. 

